this card for the IEEE 802.11g standard only recommend (IEEE 802.11n I could not test).
But there is a trick to increase the transmission power, if you do not use the N-Standard:
Bolted out the average antenna of the network card and the signal is immediately stronger. You can also try out another antenna unscrew. Sometimes, then the signal is even stronger.
Finally, can I still recommend you a complementary product for this card:
Have only this antenna on my TP-Link card and the signal strength increased by another 20%.
Greetings